NJ2X - Amateur Radio Exploration

FCC Technician Exam Question Of The Day (T6C09)

2012-06-03T07:00:00.000-04:00

Q) What is component 4 in figure T2?

A) Transformer

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C08)

2012-06-02T07:00:00.000-04:00

Q) What is component 9 in figure T2?

A) Variable resistor

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C07)

2012-06-01T07:00:00.000-04:00

Q) What is component 8 in figure T2?

A) Light emitting diode

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C06)

2012-05-31T07:00:00.000-04:00

Q) What is component 6 in figure T2?

A) Capacitor

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C05)

2012-05-30T07:00:00.000-04:00

Q) What is component 4 in figure T1?

A) Battery

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C04)

2012-05-29T07:00:00.000-04:00

Q) What is component 3 in figure T1?

A) Lamp

NJ2X Notes:
Check out NJ2X.COM for other FCC Technician Exam questions related to the schematic symbol.

FCC Technician Exam Question Of The Day (T6C03)

2012-05-28T07:00:00.000-04:00

Q) What is component 2 in figure T1?

A) Transistor

NJ2X Notes:

Checkout other transistor related questions on NJ2X.COM.

FCC Technician Exam Question Of The Day (T6C02)

2012-05-27T07:00:00.000-04:00

Q) What is component 1 in figure T1?

A) Resistor

NJ2X Notes:
Checkout the other resistor related exam questions on NJ2X.COM.

FCC Technician Exam Question Of The Day (T6C01)

2012-05-26T07:00:00.000-04:00

Q) What is the name for standardized representations of components in an electrical wiring diagram?

A) Schematic symbols

NJ2X Notes:
Schematics are extremely useful means of documenting and communicating the components and interconnections of an electronic circuit. Each type of electrical component has a schematic symbol associated with it for easy identification (see our article on NJ2X.COM: What is the schematic symbol for a ferrite bead?).

Ab Absurdo: The Big Antenna

2012-05-25T08:00:00.000-04:00

FCC Technician Exam Question Of The Day (T6B12)

2012-05-25T07:00:00.000-04:00

Q) What is the term that describes a transistor's ability to amplify a signal?
A) Gain
NJ2X Notes:
The transistor's key feature is its ability to use a small signal applied to control a much larger signal (gain). A transistor can amplify a signal by controlling its output proportionaly to the input signal.

FCC Technician Exam Question Of The Day (T6B11)

2012-05-24T07:00:00.000-04:00

Q) Which semiconductor component has a gate electrode?
A) Field effect transistor
NJ2X Notes:
All FETs have gate, drain, and source terminals.

FCC Technician Exam Question Of The Day (T6B10)

2012-05-23T07:00:00.000-04:00

Q) Which semiconductor component has an emitter electrode?

A) Bipolar transistor

NJ2X Notes:

Junction Transistors

FCC Technician Exam Question Of The Day (T6B09)

2012-05-22T07:00:00.000-04:00

Q) What are the names of the two electrodes of a diode?

A) Anode and cathode

NJ2X Notes:

FCC Technician Exam Question Of The Day (T6B08)

2012-05-21T07:00:00.000-04:00

Q) What does the abbreviation "FET" stand for?

A) Field Effect Transistor

NJ2X Notes:
Many consider the transistor to be one of the greatest inventions of the 20th century. FETs are voltage controlled devices. The Field Effect Transistor enables one electrical signal to control another.

Ab Absurdo: The Elmer

2012-05-20T08:00:00.000-04:00

Be sure to check out our other Amateur Humor posts.

FCC Technician Exam Question Of The Day (T6B07)

2012-05-20T07:00:00.000-04:00

Q) What does the abbreviation "LED" stand for?

A) Light Emitting Diode

NJ2X Notes:
LED's are semiconductor devices that convert electrical energy to light. This is the electrical schematic symbol for an LED:

LED

FCC Technician Exam Question Of The Day (T6B06)

2012-05-19T07:00:00.000-04:00

Q) How is a semiconductor diode's cathode lead usually identified?

A) With a stripe

NJ2X Notes:

Diode's cathode lead identified with a stripe

FCC Technician Exam Question Of The Day (T6B05)

2012-05-18T07:00:00.000-04:00

Q) Which of the following electronic components can amplify signals?

A) Transistor

NJ2X Notes:
A signal can be amplified by using a device which allows a small current or voltage to control the flow of a much larger current from a dc power source. Vacuum tubes and transistors are the basic devices capable of providing control of this kind.
There are many varieties of transitors. Two general types are the bipolar junction and field-effect transistor. With bipolar transistors, an small input current controls a large current flow through the device. With field-effect transistors, an small input voltage controls a large current flow through the device.

By Michael Maher (NJ2X)

FCC Technician Exam Question Of The Day (T6B04)

2012-05-17T07:00:00.000-04:00

Q) Which of these components is made of three layers of semiconductor material?

A) Bipolar junction transistor

NJ2X Notes:

Junction Transistor

FCC Technician Exam Question Of The Day (T6B03)

2012-05-16T07:00:00.000-04:00

Q) Which of these components can be used as an electronic switch or amplifier?

A) Transistor

NJ2X Notes:
The invention of the first transistor occurred November 17-December 23, 1947.

FCC Technician Exam Question Of The Day (T6B02)

2012-05-15T07:00:00.000-04:00

Q) What electronic component allows current to flow in only one direction?

A) Diode

NJ2X Notes:
There are many different varieties of diodes including:

Junction diode
Zener diode
Tunnel diode
Schottky diode
Varactor diode
Diac
Triac
SCR
Light emitting diode (LED)
Photodiode
Pin diode

By Michael Maher (NJ2X)

The Dayton Hamvention® 2012 "Internationally Connected"

2012-05-14T08:00:00.000-04:00

Hope to see you all at The Dayton Hamvention® 2012 "Internationally Connected" event will be held on May 18-20 2012 at the Hara Arena in Dayton, OH.

Since 1952 Hamvention® has been sponsored by Dayton Amateur Radio Association (DARA). For many years it has been the world's largest amateur radio gathering, attracting hams from throughout the globe.

Interested in learning more about the Hamvention® experience? Check out this collection of Hamvention® resources on the internet.

FCC Technician Exam Question Of The Day (T6B01)

2012-05-14T07:00:00.000-04:00

Q) What class of electronic components is capable of using a voltage or current signal to control current flow?

A) Transistors

NJ2X Notes:
Many consider the transistor to be one of the greatest inventions of the 20th century.^[There are many different varieties of transistors including:

Junction transistors
Unijunction transistors
MOSFET
JFET
Phototransistors
IGFET

Junction Transistors

FCC Technician Exam Question Of The Day (T6A11)

2012-05-13T07:00:00.000-04:00

Q) Which battery type is not rechargeable?
A) Carbon-zinc

NJ2X Notes:
A zinc–carbon battery is made up of a zinc outter canister that serves as both a container and negative terminal. The positive terminal is a carbon rod surrounded by a mixture of manganese dioxide and carbon powder with an electrolyte of paste of zinc chloride and ammonium chloride dissolved in water. A typical A, AA, C, or D zinc-carbon cell has an electromotive force (emf) about 1.5V. Zinc-carbon batteries are not rechargeable.